Machine for operating upon shoe soles



Oct; 3, 1944. E; w. STACEY MACHINE FOR OPERATING UPON SHOE SOLES Filed Aug. 27, 1941 6 Sheets-Sheet 1 Oct. 3, 1944." E. w. STACEY 2,359,395

I MACHINE FOR OPERATING UPON SHOE SOLE iS Filed Aug. 27, 1941 6 Sheets-Sheet 2 ill/ 3/0 i 242 Oct. 3, 1944. w A E 2,359,395 4 MACHINE FOR OPERATING UFO N SHOE SOLE S Filed Aug. 27. 1941 e Sheets-Sheet 5 M5 I I 2 l My 6 v 204 L 2 2 20 g 1. w l I: Z43 x l i Oct. 3, 1944. E. W. STACEY 2,359,395

' MACHINE FOR- OPERATING UPON SHOE SOLES Filed Aug. 27, 1941 6 Sheets-Sheet 4 386 Flg. 1Q

- Oct. 3, 1944'.' I E. w. STACEY 2,359,395

' MACHINE FOR OPERATING UP-ON SHOE sdLEs Filed Aug. 27, 1941 6 Sheets-Sheet 5 0a. 3, 1944. E, WI'STACEY 2,359,395-

MACHINE FOR OPERATING UPON SHOE SOLES Filed Aug. 27, 1941 e Sheets-Sheet 6' L llzlllllllnvlll 'x22 /65 ggg 32 \v R x,\

Patented Oct. 3, 1944 MACHINE FOR OPERATING UPON SHOE SOLES Ernest W. Stacey, Beverly, Mass, assignor to United Shoe Machinery Corporation, Flemington, N. J., a corporation of New Jersey Application August 27, 1941, Serial No. 408,468

52 Claims.

This invention relates to machines by which there may be performed upon the soles of shoes, or like articles, such operations as their rounding to the desired contour.

An object of the invention is to effect certain of the functions in a machine of this character, by simple and durable means positive in effect and easy to maintain, and which tend to minimize the efiort required by the operator. In the attainment of this object, I combine with relatively movable members, between which work may be clamped, and a tool, as a rounding cutter movabl into and out of operating position, power mechanism for producing such movements and a member movable by the operator to control the power mechanism and initiate the movement of the work-holding members and the tool. The reverse movements of these elements are controlled under the power of the machine, as through a cam movable with the clamping members. The actions attending the beginning of an operating cycle may thus be produced simultaneously by a single act of the operator, and the elements restored to their initial positions automatically. The power is preferably furnished by flexible fluid-pressure mechanism acting through a relatively movable piston and cylinder and controlled by a valve to give both the above-mentioned effects. The application of the final or work-clamping pressure .is preferably preceded by preliminary pressure,

which may be under the influence of a spring and which enables the operator to position the work properly before the operation upon it. For producing movement of the tool, there is employed a novel mechanism in which fluid-pressure is applied constantly to one end of a powerpiston and intermittently to the opposite end. By making these piston-ends of different diameters, one of these forces, as the constant pressure, may be utilized to carry the tool into its operating relation, the greater intermittent pressure overcoming this to reverse the tool-movement. This provides a greatly simplified controlling system over one in which alternate supply and exhaust of the pressure medium occurs. By making the piston in independently movable sections, the tool may be withdrawn from the work, as by the constant pressure, and still have a capacity for further outward movement. The first position gives a space for the introduction of the work into its holder, while the additional movement permits the tool to be shifted by a pattern which governs the contour to be imparted by saidtool.

In the rounding by a cutter movable upon a carrier into and out of operating position, of such Workas shoe-soles under the control of a movable pattern which co-operates in the holding of the work, irregularities are caused if the herein shown as mounted upon a lever, fulorumed upon the cutter-carrier and through a cam and spaced contact members causing the engagement of clutch mechanism through which the work-feed is produced. The movement of the work is terminated by means made efiective in such movement, as by a cam traveling with the A further object of the invention is to cause a sole-holder, including a pattern, to move through a path to receive the action of a tool positioned by the pattern in a manner tending 30,;2to minimize the displacement of the tool. With this in view, I mount the holder for rotation upon a pivoted carrier to which is joined a slotted link. In the slot, an actuating member is revoluble, thus oscillating the carrier and holder while said holder issimultaneously rotated upon the carrier. This simple mechanism moves the periphery of the pattern at the tool through an elongated path having some resemblance to the contour of the pattern. The revoluble actuating member" may take the form of a crankpin carried by an element of the gearing through which the holder is rotated. A lever is. preferably included in the connections forv oscillating. the carrier, and, regardless of the precise character of said connections, by making the fulcrum of the lever variable in its relation to the opposite extremities, the extent of elongation of the path may readily be adjusted to adapt the machine for operation u pon soles of .difierent lengths.

When a rounding cutter, or other tool upon a movable carrier, operates upon work in a holder under the control of a pattern, as the holder, including the pattern, travelsby the tool, it may be desirable to alter the spacing of said tool from the periphery of the pattern. In this manner, the relation of the formed work to the pattern may be changed, or it may be maintained constant when there is a change in the tool itself. Still another object of the invention is to efiect variations of this character by means which will keep the form of the finished work correct, regardless of changes in the pattern-form. This, I accomplish by the use of a gage device for the tool, variable in position in a direction at right angles to the plane of movement of the tool-carrier, this change in position co-operating with the pattern to alter the relation of the tool to the work. The gage device is preferably furnished by a roll rotatable upon the carrier, this roll having an inclined periphery for contact with the complementally inclined periphery of the pattern. The mounting of the roll is movable longitudinally of the roll-axis, and this causes the inclined surfaces, as that of the roll is shifted upon the pattern, to carry the tool inwardly or outwardly. In this way, the axis of the gage-roll and that of a rotatable rounding cutter may be kept in registration for all adjustments, and the spacingof the cutter from the pattern will be the same, Whatever may be the contour followed.

In the invention, other improvements may be found in the manner of mounting the carrier for the cutter, and of effecting the rotation of said cutter. The means for collecting the waste thrown off by the cutter is made the subject of a divisional application, filed in my name in the United States Patent Office on September 4, 1943, and bearing the Serial Number 501,275.

In the accompanying drawings,

Fig. 1 shows, in broken front elevation, a machine embodying my invention in one form;

Fig. 2 is a top plan view, with parts broken away;

Fig. 3, a partial broken side elevation looking from the right in Fig. l, and particularly illustrating the mounting of the cutter-arm, together with a portion of the driving mechanism for the cutter;

Fig. 4 shows another portion of said driving mechanism in side elevation;

Fig. 5 is a vertical section from front to rear of the machine and taken at the left of the cutter-arm mounting;

Fig, 6, a top plan View of the gearing by which the work-clamp is rotated;

Fig. 7, an enlarged sectional detail of the latches for the clamp, it being taken on the line VIIVII of Fig. 5;

Fig. 8, a similar detail of the clutch through which the cutter is driven, on the line VIIIVIII of Fig. 3;

Fig. 9, a horizontal section on the line IX-IX of Fig. 1;

Fig. 10, a partial vertical transverse section on the line X--X of Fig. 9;

Fig. 11, an enlarged side elevation of the connection through which the fluid-controlling valve is opened by the operator;

Fig. 12, an enlarged XIIXII of Fig. 9, illustrating the connection by which said valve is closed;

Fig. 13, a sectional detail on the line XIII-XIII of Fig. 9;

Fig. 14, a diagram showing the valve and its more closely associated elements in their normal positions section on the line- Fig. 15, a similar view with the elements in their active positions;

Fig. 16, a horizontal section through the cutter-arm; and

Fig. 17, a vertical section on the line XVII- XVII of Fig. 16,

The base of the machine has a lower portion 20 and an upper or cover-portion 22. Rising from the rear of the latter, and journaled in a downwardly extending bearing formed therewith, is a tubular shaft 24 (Fig. 5). Oscillating about this shaft, and supported at the bottom upon surfaces 26 of the base-cover, is a work-carrier 28. Projecting forwardly and horizontally from the carrier are lower and upper arms 30 and 32, respectively, upon which are rotatably mounted a pattern 34 and a clamp 36. These are arranged to hold between them the work, which may consist of a stack of sole-blanks B, to receive the action of a tool, as an axially elongated, rotatable rounding cutter 38. This cutter is positioned with reference to the work by contact with the pattern 34 of a gage-roll 40, mounted with the cutter and held yieldably in operating relation. By virtue of simultaneous oscillation of the carrier and the rotation of the pattern and clamp about their vertically alined axes, there is imparted to the work-holding means a combined movement of translation and rotation, which will move any point in the periphery of the stack through an elongated closed path which has a rough resemblance to the contour of the pattern. This tends to minimize the displacement of the cutter, as the periphery of the pattern travels along the gage-roll.

The pattern is supported upon two posts 42, 42, having at their upper extremities reduced projections 44 (Fig. 1), which are received in openings in the underside of said pattern. The posts rise from a crossbar 46, which is stepped upon a bearing 48 at the forward portion of the arm 30 and has depending from its center a shaft 50, journaled in a sleeve 52 secured to the underside of thev arm. Fixed to the shaft at its lower end is a gear 54, meshing with a gear 56 fast upon the shaft 24. With the latter gear meshes a pinion 58 (Figs. 9 and 10) secured to a vertical shaft 69, journaled in a bracket 62 attached to the underside of the base-portion 22. The shaft 60 is joined by a worm-wheel 64 and a worm 66 to a horizontal shaft 68, rotatable in the bracket and having normally free to turn about it a gear 10, meshing with a pinion 12 secured to a horizontal countershaft T4 journaled in a casing 16 attached to the base-portion 22 (Fig. 4). Through belt-gearing 18, the shaft 14 is constantly driven from a motor 89 mounted at the bottom of the base-portion 2D. The gear 10 has turning with it the driving member 82 of a clutch C (Fig. 17), the co-operating driven member 84 of which is splined to the shaft 68. By the customary pivoted yoke 85, the driven member may be shifted against the force of springs within the clutch, from engagement with a stationary brake member 88, by which its rotation is normally retarded, into contact with the driving member 82. With the driven member in the latter relation, the pattern 34, through the intermediate connections just indicated, will be turned in the direction of the arrow in Fig. 2. The mechanism by which the clutch is actuated and the time of rotation controlled will later be described. The clamp 36 is rotated in synchronism with the pattern by sprocket-gearing ,90, contained within the arm 32 and connecting the shaft 24-to the'Shaft 92xby whichthe clamp is carried (Eigs. and'6). Idler-pulleys-93, 93, rotatable upon a plate.- 94 adjustable in position upon the arm 32, provide for'taking'upslack in the sprocket-chain. The shaft 92 is journaled.

verticallyin the forward extremity of the arm 32, and has'fulcrumed at its lower extremity a.

rocking lever 95: (Fig. 1), from the opposite arms of which depend clamp-carrying bars 96, 96. This mountingof the clamp-permits it to adapt itself to, and thus hold more firmly, stacks of.

soles irregular in height. As appears inFig. '7, clamps 36 ofdifferent sizes may readily be applied to the lower endsof the bars by latches 98,

pivoted in recesses in said bars and havinghooked ends spring-pressed into engagement with the inclined walls of openings 99 inthe.

clamps.

To'produce the bodily oscillation of the workholdingmeans, there turns with the pinion 58 a crank-pin I06 about the axisof the shaft 24, surrounded b a block I08 (Figs. 9 and10).. The block is guided in a slot extending across: the enlarged end IIO of a link II2, carried by arms H4, H4 pivoted to the base-portion 22 to have a parallel motion. Atits'opposite extremity, the link is articulated to a lever I I6, fulcrumed-upon a block II8 adjustable from front to-rear of the base. The forward end of the lever. is joined by a link I to a stud I22, projecting downwardlyfrom the arm 30. ofthe. carrier 28 and passing through an elongated opening I24in the baseportion 22. This opening is shielded against-the entrance of dirt into. the base by the lateral extension of the forward end of the arm 30 (Fig. 2), thisarm being sector-shaped. Due to thisconnection between the crankpin I06 and. the carrier, said carrier will be'oscillated between opposite extremes of movement,.the amount-of which will depend upon the location of the fulcrum-block I I8 along the lever I I 6. This gives the previously mentioned elongationof the path through which the work-holding meansis moved. To adjust the lever-fulcrum,..to causethemovement'of the pattern andclamp to correspond more closely to the length of. the patternbeingemployed, the block H8 is guided in ways I26 at the underside of the. cover-portion of the. base (Fig. 10), and connected to the block is ayoke I28, through the crossbar of. which is threaded a. rod I30.ar-- ranged to turn in the front of the cover-portion. By rotation of a hand-wheel I32 secured to the forward extremity of the rod outside thebase, the block may be shiftedbackand forth, as desired. In its adjusted position, the block may be secured against displacementbya.screw- I34 rising from one of the gibs furnishing the ways for. the block, there being upon the screw anut I36 =which may be turned down into clampingengagement with the base. To enable the operator to vary con veniently the extent. of oscillation of the carrier 28, the rod. I30 may turn. through spiral gearing I38 (Fig. 5) an indicating. disk. I40, inscribed upon its periphery with. size-numbers visible through awindow I42 at the front of the base.

That the operator may secure the workupon the pattern 34, the clamp is forced against the top of the stack B. To permit the lowering and raising of the clamp, its shaft92 is splined to the sprocket-wheel of the gearing 90by which it is rotated, and has atits upper end an actuate ing collar I43. which rests upon an. interposed bearing I44'(Fig. 5). The collar ispivotedto the forward extremity of alever I45, fulcrumed-upon the top of the carrier-arm 32 and pivoted at its opposite end to a rod I46 passing throughtheshaft: 24. At the bottom, the rod at I4! is seated.

in, anelement of hydraulic or fluid-pressure mechanism H, which will be described separately. A-tension-spring I48, uniting the rod to a rela-.- tively fixed point, urges the clamp 36'toward the pattern 34, so work may be held between them under relatively light pressure.- The operation of the-hydraulic mechanism applies a heavy force to the rod toclamp the work securely forv the operation uponit.

Considering now the mounting of the cutter:

38,.it iscarried by an oscillatory arm I50,',the form of which may best be seen in Figs. 2 and 16, andthe manner of support in Fig. 3. This armis adapted to furnish a double conduit, through which the dust and chips produced in the rounding operation. may be drawn off. A relatively contracted passage I52 leads directly from the.

cutterand at I54 joins a passage which-delivers to a-stationary conduit I56, connectedto an airexhaust system. A segment I58 upon the arm bears closely against a complementarysegment I60 upon the conduit I 56, to prevent the intake'or leakageof airv as. the arm oscillates. A lateral extension I62 of th arm I50 furnishes a passage I64 connected to the passage I52, andwhich may be considered as the main. exhaust-conduit;

Its opening is so expanded that it-is adapted to receive the material thrown off by the cutter at different angles asthe work is turned: Further, as the work-carrier 28 is swung in that direction, the work-holding means moves in the throat without interference. The. end I55 of the dividing wall betweenthe; conduits I52 and I64 lies in close-proximity to the periphery of the cutter. This provides a baffle'which tends to prevent the waste from'the work being carried away from the throat of the conduit I64. By this baffle, said waste is largely retained at'the throat to be removed by the. exhaust. Any dust which passes the baflie willbe sucked'through the auxiliary conduit I52. Th arm I50 surrounds and has a bearing upona tubular post I56,- rising from the base-portion 22; and is'stepped upon a flange I68 about the post and outside the flange upon the base. From the lower supporting portion of the cutter-arm a: short arm II0 projects, this being joinedby a link I12 to the hydraulic mechanism H,.which, when caused to act, forces the gageroll 40 associated with the cutter 38 yieldably against the periphery of the pattern 34.

The cutter is secured to the lower end of a vertical shaft I14 (Fig, 5), journaled in the forward extremity of the arm I50. The shaft passes up into a. compartment I'I6, covered by a topplate I! 8, and here has fast upon it a pinion I80, with which meshes agear I82 fixed to a vertical shaft I84 rotatable in the bottom of the compartment and in the top-plate. Fast upon the shaft I84 above the top-plate is a pulley I86, about which and about a pulley I88 (Figs. 2 and 3) stepped upon the top of the post I66 and surrounding a Vertical shaft I90, a belt I92 passes. The belt is engaged by a tightening pulley I94, rotatable upon an arm I96 pivoted for horizontal adjustment upon the cutter-arm. The shaft I extends through th post I 66, and is constantly rotated during the operation of the machine-by a bevel-gearing I98 from the motor member 200 of a clutch c keyed upontheshaft (Fig. 8). The driving member receives contact of a driven plate I99, surrounding the hub of the pulley and forced upwardly by an expansionspring I also surrounding the hub. The plate is compelled to turn with the pulley while movable along the hub, by pins 202 extendin from said plate into bores in the pulley. Against the bottom of the pulley a non-rotatable brake member 203 may be forced. The members I99 and 203 are respectively acted upon by yokes 204 and 206, fulcrumed upon a casing 208 surrounding the clutch mechanism (Fig. 3). Between out-. wardly extending arms of the yokes a tensionspring 2") is joined, the effect of this being to separate the yoke 204 from the plate I99 and permit the latter to be urged by the spring 20I against the driving member 200 and to withdraw the brake 203. This, as the plate turns the pulley.I88, provides for the rotation of the cutter and is permitted by the minor transverse dimension of a cam 2I2, carried by a horizontal shaft 2 I4 rotatable in the casing 208 and lying between adjustable contact members 2I6, 2I6 projecting from the yoke-arms. The cam may be turned by a hand-lever 2I8, secured to the shaft 2I4 outside the casing (Fig. 1) to bring the major transverse dimension of the cam against the contact members 2 I6. Now the yoke-arms are separated against the tension of the spring 2 I 0, lowering the plate I99 from the driving member 200, compressing the spring MI and applying the brake 203. The cutter is now at rest.

It has been pointed out that the hydraulic mechanism H acts to secure the work upon the pattern 34 by lowering the clamp 36, and also to swing the cutter-arm I50 yieldably to operating position, so the gage-roll will contact with the periphery of the pattern to determine the contour imparted to the moving work by the cutter. The general assembly of the mechanism H may be seen in Figs. 1 and 5, and to a limited extent in Figs. 2 and 9, while the valve-controlling elements appear in Figs. 11, 12 and 13, and with the system diagrammatically represented in Figs. 14 and 15. The first of these diagrams shows the parts in their normal positions, and in the second they are in action. The movement of the clamp 36 is effected by the reciprocation of its rod I46, the end I41 of which is acted upon by the rod 230 of a piston 232, movable in a vertical cylinder 234 situated at the bottom of the base 20, the piston being held normally down by an expansion-spring 235. For oscillating the cuttor-arm I50, its link I12 (Figs. 1, 2, 3, 14, 15 and 16) is connected to one arm of a bell-crank-lever 235, fulcrumed at the rear of the base and having a second arm acted upon by a compound or double piston 238, 240, the sections of which are respectively movable in oppositely placed and axially alined cylinder-sections 242 and 244. The piston 238 and its cylinder are of less diameter than the companion piston and cylinder, and has its rod or shank 246 extending into an axial bore in a tubular rod or extension 245 from the piston 240. This enables both pistons to actuate the lever 236, and still be capable of independent movement. Controlling the delivery of a pressure-fluid, such as oil, to the clamp-cylinder 234 and to the cutter-arm cylinders 242 and 244, is a valve V (Figs. 1, 5, 11, 13, 14 and 15) carried in the base by a crossbar 249. This valve has axially alined casings 241 and 248, in which valve-bodies 250 and 252, each provided with three equally spaced peripheral recesses, are respectively rotatable. The casings and bodies furnish valve-sections which respectively govern the movements of the clamp and cutter-arm.

Each of the sections of the valve V has a supply-port or inlet 254 (Figs. 14 and 15), connected through a distributor-head 256 to a pump 258 driven by the motor (Figs. 1 and 9) and drawing oil from a tank 259. The pump creates pressure in the distributor-head to an extent permitted by a relief-valve 12, which blows off when a predetermined pressure is exceeded. Each of the sections also has a port 260, joined, through one of its body-recesses, in one instance, to the clamp-cylinder 234 and, in the other, to the outer end of the larger cutter-arm-cylinder 244. A third outlet or port 262 of each section, through another of its body-recesses, permits exhaust to the tank. The valve-bodies are rotatable tog-ether from their normal positions, as appears in Fig. 14, by a hand-lever 264 (Fig. 1) fulcrumed upon the top of the cover-portion of the base. A downwardly extending arm 266 of the lever, which lever is in the form of a bellcrank, is connected by a link 268 to a carrier 210 (Fig. 11) mounted to turn about the double spindle 212 of the valve V. Pivoted upon this carrier is a pawl 214, which may engage any one of a series of depressions formed in the periphery of a disk 216, fast upon the spindle. Movement of the lever 264 by the operator will cause the pawl to turn the valve-bodies from their normal inactive positions to one in which the clamping of the work is produced, together with the movement of the cutter-arm into operating position. To turn the valve-bodies forward, or clockwise as viewed in Fig. 14, another step to return them to their normal positions for the purpose of stopping the operation of the machine, a second carrier 218 (Fig. 12) is arranged to turn about the valve-spindle. This carrier has upon it a pawl 280 to enter a notch in a disk 284, secured to the extremity of the valve-spindle opposite the disk 216. Joined to the carrier 218 is a link 28I, which, at its lower extremity, is articulated to a lever 282 fulcrumed upon a bracket 285 extending from the crossbar 249. The opposite extremity of the lever is joined to a plunger 286, guided for vertical movement upon the bracket and held normally raised by an expansion-spring 288. A roll 290 upon the end of the plunger is positioned for engagement by a cam-plate 292, which is secured adjustably to the hub of the gear 54 by which the pattern 34 and the clamp 36 are rotated about their vertical axes (Fig. 5). Just as the work is returned by the gear to its initial or starting position after the completion of a rounding operation, the cam turns the pawl 289 to carry the valve-bodies 250, 252 to their normal positions, stopping the operation of the machine. In each of the settings, the valve-bodies are held by a springpressed plunger 293 entering one of a circumferential series of depressions in a disk 294 fast upon the spindle 212 (Fig. 13).

As to the control of the clamp 36 by the valve V, as appears in Fig. 14, the port 260 of the valvecasing 241 is initially connected to the exhaustport 262; pressure is cut off the cylinder 234; and the clamp is free to rise, except for the fact that it is preferably held down by the relatively small force exerted by the spring I49. There is thus produced preliminary pressure, which is of such a degree that the operator can readily adjust the work, as a stack of sole-blanks, after it has been applied to the pattern 34, while it is still retained against accidental displacement. Independent clamp-cylinder 2 34.

assesses movement of the clamp-rod llfiandthe pistonrod 230 of the cylinder 234 is permitted, because the end l4! of the clamp-rod is loose in a socket in the upper end of the piston-rod. When a movementof the lever 264 by the operator turns the valve-bodies to the positions illustratedjin 15, it causes the port 260 ofthecasing 241 to be joined to the supply-port 254. This introduces pressure into the cylinder 234 to an extent permitted by the relief-valve v, to cause the clamping of the work for the operation upon it.

To free'the space under the clamp for the introduction of the work, a treadle 300 is pivoted at the front of the base (Fig. 5) andhasan upward- "ly extending arm 3B2 joined by a link 304 to a bellcrank-lever 306, fulcrurned upon the front of the The generally horizontal arm of this bell-crank-lever engages a collar 309 upon the rod I46 and to which the spring I48 may be attached. When the treadle is depressed, the connections act upon the rod to raise the clamp. After the blanks have been applied to the pattern, the operator releases the treadle; ifne'c'lessary positions the stack more exactly; and then actuates the valve V to cause the application of final clamping pressure. 7

Considering the hydraulic actuation of the cutter-arm I50, between the Opposite extremities 308 and 3 ll] of its cylinders 242 and 244 there is a capacity for movement of the compound piston 238, 240 which will allow the cutter-arm to be carried, by the lever 236 and its connections, through the distance necessary for the action of the cutter 38 upon the largest sole which is to be rounded. Movement of the larger piston 240 is limited by contact of its inner face with a wall 3|2 of the cylinder 244. Before the operator draws forward the lever 264, and the valve V is still in the initial or idle position of Fig. 14, oil from the pump 258 and distributor-head 256, under the pressuredetermined by the relief-valve 'v, flows directly to the outer extremity of the cylinder 242', maintaining a normal force upon the piston 238 tending to move the cutter into its operating position. There is, however, at this time a fiow of oil from the distributor-head, through the ports 254 and 260 of the Valve-casing 248 to the outer extremity of the larger cylinder 244. The pressure created maybe varied by a valvev", interposed between the valvecasing 248 and the cylinder 244. Because of the greater diameter of the piston 240, the force of the oil in the smaller cylinder is overcome, and the piston 240 will be carried to the right (Fig. 14) against the cylinder-wall 3'l2. Ifhis, as the extension 245 bears against a shoulder upon the piston 238, acts to hold the cutter away from'its operating position and in n'ormal position. The extent to which the wall 312 allows thepis'ton 240 to travel in this direction, will limit the movement of the'piston 238 to something'less than its greatest outward movement, the cutter being carried only sufficiently away from the pattern and clamp to permit the convenient introduction of the work. The use 'of a larger piston, acting against a smaller upon which a constant force; is exerted, permits a greatly simplified valve-structure over that necessary to control the alternate admission and exhaust of pressure from the opposite ends of a cylinder.

After the work has been clamped under the preliminary pressure of the spring [481 and the operator has actuated the lever 264 so the valve V assumes the relation shown in Fig. 15, the valYe-bod-y 252 shuts pressure off from the port 260- nc ine cylinder 244, and a connection is madebetween said port and the exhaust-port 262. Consequentlvtheconstantly acting pressure, applied by the pump through the distributor-head to the cylinder 242, becomes effective to move the cutter into operating position, with the roll 45 in engagement with the pattern 34. There is now available a constantly applied pressure of the proper degree, governed by the relief-valve v, to maintain the roll and pattern in contact. Therefore, as the worl; rotates and jrevolves, the cutter 38 will be urged in by the hydraulic pressure, or moved out by the en- 'gag'e'mentgof the traveling pattern with the roll, to cause the clamped stack 3 of soles to be 'roundedto the contour of the pattern. Because of the ability of the shank 246 of the piston 2 38 to shif Withinthe tubular extension 245 of the piston 240 said piston238 may now travel outwardlyindependentlypr the piston 240 toward the cylinder-surface 3H1, toWhatever distance is required because of the forcing back of the iag am I50 due to the maximum horizontal dimension of the pattern. This considerably exeeeds he normal position produced by the piston 240 to allow the application of work to the Pa n 'Ifhe rounding operation havingbeencornpleted thecam 292 upon the gear 54 turns the valve-bodies 25D and 252 to give the initial hydraulic connections, as illustrated in Fig. 1s. The" cylinder 2 34 exhausts. to the tank 259 throughthe ports 26 9 and 252 in thelcasing 247. The spring 235 lowers the piston 232, leaving the clamp-rod I46 under theinfiuence of the spring l4 8 only, to give preliminary pressure upon thework to be next operatedupon. At the casing248, pressuresis re-esta'blished from the distributor-head 256 through the ports 254 nd 25'" t e c er 4 Ib x e o larger piston 240, overcomes the constant pressure upon the smaller piston 238. The two pistons travel together to the right, until the piston 2 4ll' isstopped by the wall 312. The connections between the piston 238 and the cutterarm l 5fl carry the cutter away from thework, so his may readily be removed and a new stack of sole blahks applied.

lf the feed of the work is started before the rotary cutter.has reached a point in the contour tQ WhiQhQt'hB soles are to be rounded, irregularities in the edges will be produced where the feed begins, 7 A well known practice in the rounding of' soles by a rotatable cutter is to maintaina sole-blank, or stack of such blanks, at rest" until the full-inward position of the cutter has been determined by contact' of its associated gagingmeans with the pattern, after which'the work is set in motion by the operator to allow the cutterto act under the guidance of saidpattern. Under these conditions, there is a period during which the cutter is eiiective at a'point corresponding tofthe pattern and beforethe work-movement is initiated. Because of re yield in the cutter-mounting, in thegage, m me work-support and in the work itself, the cutterwill'advance somewhat. into the work beyond the periphery of the pattern, and will produce a depression in the finishededge. An effort has been made to correct this by employingllneans to; start the feed of thework automatically, when thecutter has moved in to a predetermined point. This furnishes a" satisfactory arrangement, if an'adjustment.ismade not done, a me'an'positi'on of the cutter must be taken for the beginning of the feed, and this introduces defects in the rounded edge for every size of sole other than that corresponding to the chosen mean. If the sole is larger than this, it will show the depression just described as created by the manual initiation of feed. -If it is smaller, the start of the workmovement, before the cutter obtains its proper operating relation to the pattern, will cause it to come into position in an inwardly inclined direction, and to complete its .cut along an outward incline. A projection from the rounded edge results. In either case, there is a departure from the desired contour, which must be finished out by an additional operation. To avoid such defects in the edge, I make the starting of the work-movement dependent upon the arrival of the cutting periphery of the cutter 38 at a vertical line which lies at the rounded edges of the soles which it is to form, this being accomplished automatically under the control of the gage-roll 48. For this purpose, the roll is rotatable about a vertical axis upon the arm 328 of a lever 322, fulcrumed at 324 upon the cutter-arm I58 (Figs. 1 and 16). When this arm is back in its inactive position, the lever, as indicated by the dash-dot lines in Fig. 16, is held by a spring 328 against a stop-pin 326 rising from the arm. The periphery'of the roll 48 is now in proximity to that of the pattern 34, as shown in full lines (Figs. 5 and 16). When the arm 328 is carried in upon the arm I58 by the mechanism H for the operation of the cutter upon the work, the bodily movement of the lever 322 brings the roll into direct contact with the pattern. The travel of the roll thus being stopped and the oscillation of the arm I50 continuing, the axis of rotation of the cutter quickly comes into registration with the axis of the roll. The lever 322 is now positioned as appears in full and dotted lines in Fig. 16, this being determined by a stopscrew 334 threaded through the lever 322 and contacting with a lug 336 upon the cutter-arm. On the lever is a transversely extended camsurface 338, and, when the movement of the lever upon the cutter-arm begins, this cam-surface depresses a plunger 348 movable vertically in a bracket 342 (Fig. 17), depending from the cutter-arm, and held normally raised by an expansion-spring 344. The lower extremity of the plunger has a horizontally extended contacthead 346, which, in all positions of the cutterarm, will be above the opposed contact-head 348 of a plunger 358 movable vertically in the cover 22 of the base. somewhat spaced vertically from the head 348. Below the cover the plunger 350 engages a lever 352, fulcrumed at 354 upon a bracket 355 depending from the cover and held normally elevated against an adjustable stop 356 by a tension-spring 358. About the same fulcrum a second lever 368 is arranged to turn. Upon an upward extension 362 of the lever 352, a springactuated pawl 364 is pivoted. This is movable into engagement with a shoulder 366 upon the lever 368. The free extremity of the lever 368 is joined by a link 368, variable in length, to a shifting bar 318. A tension-spring 312 maintains a shoulder 313 upon the bar 318 in contact with a crossbar 314 upon the yoke 86 of the clutch 0, through which the work-holding mechanism is actuated. In this position of the bar 318, said clutch is disengaged and the workholder is at rest. At the same time, the spring 312 holds the lever 360 in its normal raised posi- Initially, the head 346 is tion. The shifting bar is pivoted at the end opposite the clutch to a lever 316 (Fig. 9), ful lcrumed upon a bracket 311 at 318, and having at its free end a roll 388 rotatable upon a holder 382 yieldable upon the lever. The roll is forced by an expansion-spring 384 acting upon the lever into the path of a cam 386 mounted for circumferential adjustment upon the gear 54. A stopscrew 388 upon the lever limits the movement of the roll inwardly, after it has been freed by the cam.

When the cutter-arm I58 is being swung into its operating position, the plunger 340 is inactive because of the separation of its head from that of the plunger 358, but these heads, because of their horizontal extensions, remain 0pposite each other. As the lever 322 begins the movement about its fulcrum to carry the gageroll 48 into registration with the cutter 38, the cam-surface 338 lowers the head of the plunger 348 into engagement with that of the plunger 358. This turns the lever 352 contraclockwise (Fig. 17), causing the pawl 364 to engage the shoulder 366 upon the lever 368. Through the link 368 the bar 318 is depressed, and its shoulder 313 lowered from the clutch-yoke-bar 314. The engagement of the clutch C is thereupon caused by its springs, as the released yoke 86 moves to the right, to initiate the feed of the work as the cutter reaches its operating position. The time of clutch-engagement may be altered by adjustment of the position of the stop-screw 356 and the length of the link 368. When the movement of the work past the cutter starts under the influence of the gear 58, the cam 386, revolved by the gear 54 from its initial position (Fig. 9), releases the lever 316, which is turned contraclockwise by the spring 384. This carries the bar 318 to the right (Fig. 1'7) with its shoulder 313 beyond the clutch-yoke-bar 314 and its upper edge held against said bar by the spring 312. When the movement of the work is finished and the cam 386 has returned to its normal position, its action upon the lever 316 shifts the bar 318 to the left, its shoulder 313 disengaging the clutch and stopping the feed of the work. After the contact of the pawl 364 with thefshoulder 366 has caused the initiation of the feed, an upwardly extending tail 392 upon said pawl comes into contact with a fixed pin 394. This produces the separation of the pawl from the shoulder, freeing the lever 368 for elevation by the spring 312 and the restoration of the bar 318 to its raised yoke-engaging relation. The clutch-controlling mechanism is now ready for the succeeding work-movement.

It is necessary to provide for a different spacing between the periphery of the cutter 38 and the point of contact with its gage-roll 48 with the pattern 34. This may be because of the reduction of the diameter of the cutter by grinding, or because it may be desired to, vary the extension of the sole beyond the periphery of the pattern. If this is effected in the usual manner, by altering the position of the axis of the roll upon the supporting arm, the correct relation of the rounded sole to the pattern cannot be maintained. While the relative movement between V the enlarged portion 320 of the lever 322.

a beveled periphery 400, it being shown as inclined downwardly and inwardly from the work (Fig. The periphery of the roll is cornplementally inclined-at 402, so, when the surfaces are in contact, the axes of rotation of the two elements are parallel. The roll is free to rotate upon the upper end of a screw 404, guided in a vertical bore near the outer extremity of The lever-portion is slotted horizontally at 406 (Fig. 1), and in this slot, and threaded upon the screw, is a large knurled nut 468. By turning the nut, the screw, with the roll, may be raised or lowered, substantially at right-angles to the plane in which the cutter is moved by the carrier-arm I50, and, when said roll is in engagement with the pattern, the spacing of the cutter from said pattern is changed by displacement of the carrier-arm. However, in operating relation, when the lever-screw 334 is against the arm-lug 336 and the axes of the cutter and roll are in registration, this vertical alinement will not be disturbed by the adjustment of the roll, and, for any setting, the spacing between the rounded sole-edge and pattern will remain the same, regardless of pattern-contour.

In using the apparatus, the operator, if there is to be a change in the size of the sole to be formed, applies the appropriate pattern 34 to the posts 42, and may substitute another clamp 36 for that upon the bars 96 if the difference is substantial. To minimize the displacement of the cutter 38 by the action upon the gage-r011 40 of the traveling pattern, the hand-wheel I32 may be rotated until there appears at the window I42 the sizenumber of the sole. The roll 40, engagement of which with the pattern maintains the cutter in the correct operating relation, may be adjusted longitudinally of its axis by the nut 408, if a change in the position of the cutter toward or from the work is desired. The pattern and clamp are normally at rest and the cutter in rotation, but with the cutter-arm I50 held back by the pressure in the cylinder 244 upon the piston 240 overcoming the pressure in the cylinder 242 upon the smaller piston 238 of the hydraulic mechanism H. This gives a space suiiicient for the free introduction of the work. Depressing the treadle 300 to lift the clamp, the operator places a stack B of sole-blanks upon the pattern, and then releases the treadle, permitting the spring I48 to lower the clamp into preliminary contact with the top blank. After the stack has been located in the proper relation to the pattern, the operator swings forward the hand-lever 264, so the valve V of the mechanism H is shifted from the position of Fig. 14 of the drawings to that of Fig, 15. Admission of fluid-pressure to the cylinder 234 acts, through the rod I46 and its connecting elements, to apply final clamping pressure to the work, the degree of which is determined by the relief-valve 1). At the same time, the valve V cuts off fluid-pressure from the cylinder 244, which has been holding back the cutter-arm I50, and leaves the constantly applied pressure in the cylinder 242 free to, act upon the piston 238. This carries the cutter into operating position, at which the gage-roll 40 is in yieldable engagement with the periphery of the pattern, and the axes of said roll and of the cutter are in vertical alinement. The gage-roll has first made contact with the pattern, its supporting lever 322 turning about its fulcrum as the advance of the cutter-arm continues. Immediately the cutter has been carried by the cutterarm to its correct operating point, with its axis in registration with that of the gage-roll, the cam 338 upon the lever 322, acting through plungers 340, 350 and the intermediate connections, will lower the bar 310 to cause the engagement of the clutch C. This starts in action the gearing which oscillates the carrier 28 and simultaneously rotates the pattern 34 and the clamp 36, imparting to the work-holding means a compound movement of translation and rotation. The initiation of the work-travel, therefore coincides with the arrival of the periphery of the cutter at a line lying in the rounded edges of the soles, and there will be no inward or outward displacement of said cutter to cause irregularity in the contour of the completed work. The dust and chips formed by the cutter are carried off by the exhaust through the passages I64 and I52 in the cutter-arm. After the complete presentation of the periphery of the stack B to the cutter, the cam 386 upon the patternrotating gear 54 swings the lever 316 to produce the opening of the clutch C and the resetting of its controlling elements, bringing the work-holding means to rest. The cam 292 upon the same gear shifts the valve V to restore the initial connections, cutting off pressure from the cylinder 234 and applying it to the cylinder 244. The first cylinder allows the spring 235 to lower the rod I46 and remove heavy clamping pressure from the finished work, leaving it held only by the force exerted by the spring I48. The cylinder 244 causes the larger piston 243 to overcome the effect of the smaller piston 238 and retract the cutter-arm to its initial position. Depression of the treadle 363 lifts the clamp 36 and enables the operator to remove the stack of rounded soles from the pattern 34. The'machine is now ready for the succeeding operation.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a machine for operating upon soles, Workholding members movable relatively to each other and between which soles are clamped, a tool movable into and out of operating position, power mechanism by which the movement of the workholding members and tool is produced, and a member movable by the operator to control the .power mechanism and initiate the movement of the work-holding members and tool.

2. In a machine for operating upon soles, workholding members movable relatively to each other and between which soles are clamped, a tool movable into and out of operating position, power mechanism by which the movement of the workholding members and tool is produced, a member movable by the operator to control the power mechanism and initiate the movement of the work-holding members and tool, and means movable under the power of the machine to control the power mechanism and reverse the movement of the work-holding members and tool.

3. In a machine for operating upon soles, workholding members movable relatively to each other and between which soles are clamped, a tool movable into and out of operating position, fluidpressure mechanism by which the movement of the work-holding members and tool is produced. and a valve movable by the operator to control the fluid-pressure mechanism.

4. In a machine for operating upon soles, workholding members movable relatively to each other and between which soles are clamped, a tool movable into and out of operating position, fluidpressure mechanism by which the movement of with the work-holding members for again actuating the valve to reverse the movement of the work-holding members and tool.

5. In a machine for operating upon soles, a

rotatable sole-supporting member, a rotatable sole-clamping member co-operating therewith, said members being relatively movable to hold a sole between them, a tool to which the members present the clamped sole for an operation upon it, a relatively movable cylinder and piston, means for introducing fluid-pressure into the cylinder to produce the relative movement, and means for transmitting such movement to the sole-engagirg members to effect the clamping of the sole.

6. In a sole-rounding machine, a rotatable pattern, a rotatable clamp movable toward and from the pattern, a rounding cutter to which a sole clamped upon the pattern is presented, a cylinder, a piston movable therein, means for introducing a fluid-pressure into the cylinder to actuate the piston, and means for transmitting the movement of the piston to the clamp.

7. In a machine for operating upon soles, a rotatable sole-supporting member, a rotatable sole-clamping member co-operating therewith,

. said members being relatively movable to hold a sole between them, a tool to which the members present the clamped sole for an operation upon it, a relatively movable cylinder and piston, fluidpressure means, means actuated by the operator to control the application of fluid-pressure to the cylinder and produce the relative movement, and means acting in the rotation of the work-engaging members for cutting off the fluid-pressure from the cylinder.

8. In a sole-rounding machine, a rotatable pattern, a rotatable clamp movable toward and from the pattern, a rounding cutter to which a sole clamped upon the pattern is presented, a cylinder, a piston movable therein, fluid-pressure means, a valve actuated by the operator to apply fluid-pressure to the cylinder, and means acting in the rotation of the pattern to close the valve.

9. In a machine for operating upon soles, a rotatable pattern, a rotatable clamp movable toward and from the pattern, a tool to which the pattern and clamp present a sole for an operation upon it, a shaft by which the clamp is carried, means for rotating the shaft, a lever connected to the shaft, a rod joined to the lever, a fluid-pressure cylinder, and a piston movable in the cylinder and acting upon the rod.

10. In a machine for operating upon soles, a rotatable pattern, a rotatable clamp movable toward and from the pattern, a tool to which the pattern and clamp present a sole for an operation upon it, a shaft by which theclamp is carried, a lever connected to the shaft, a rod joined to the lever, a fluid-pressure cylinder, a piston movable in the cylinder and acting upon the rod, a tubular shaft surrounding the rod, gearing connecting the shafts, and means for rotating the tubular shaft.

11. In a machine for operating upon soles, a rotatable pattern, a rotatable clamp movable toward and from the pattern, a tool to which the pattern and clamp present a sole for an operation upon it, a shaft by which the clamp is carried, means for rotating the shaft, a lever connected to the shaft, a rod joined to the lever, a fluid-pressure cylinder, and a piston movable in the cylinder and acting upon the rod, said piston and rod being capable of independent movement.

12. In a machine for operating upon soles, a rotatable sole-support, a tool for operating upon a supported sole, a carrier movable to present the tool in operating position or to remove it therefrom, and fluid-pressure means for moving the carrier.

13. In a machine for operating upon soles, a rotatable sole-support, a tool for operating upon a supported sole, a carrier movable to present the tool in operating position or to remove it therefrom, and fluid-pressure means for moving the carrier both toward and from the operating position.

14. In a machine for operating upon soles, a rotatable sole-support, a tool for operating upon a supported sole, a carrier movable to present the tool in operating position or to remove it therefrom, means for applying fluid-pressure constantly to move the carrier in one direction, and means for applying greater fluid-pressure intermittently to move the carrier in the opposite direction.

15. In a machine for operating upon soles, a rotatable sole-support, a tool for operating upon a supported sole, a carrier movable to present the tool in operating position or to remove it therefrom, fluid-pressure means for moving the carrier, a valve for actuation by the operator to control the movement of the carrier toward the operating position, and means movable under the power of the machine for actuating the valve to move the carrier from the operating position.

16. In a machine for operating upon soles, a. rotatable sole-support, a tool for operating upon a supported sole, a carrier movable to present the tool in operating position or to remove it therefrom, and fluid-pressure means for moving the carrier both toward and from the operating position, said means leaving the carrier free for further movement from the operating position.

17. In combination, a work-holder, a tool for operating upon the work, a carrier movable to present the tool at the holder or to remove it therefrom, a cylinder, a piston movable in the cylinder and connected to the carrier, means for applying fluid-pressure constantly to one end of the piston, and means for applying fluid-pressure intermittently to the opposite end of the piston.

18. In combination, a work-holder, a tool for operating upon the work, a carrier movable to present the tool at the holder or to remove it therefrom, a cylinder having opposite sections of different diameters, a piston having sections fitting within the cylinder-sections, one of said sections being connected to the carrier, means for applying fluid-pressure constantly to one section of the piston, and means for applying fluid-pressure intermittently to the opposite section of the piston.

19. In combination, a work-holder, a tool for operating upon the work, a carrier movable to present the tool at the holder or to remove it therefrom, a cylinder having opposite sections of different diameters, a piston having sections fitting within the cylinder-sections, the piston-sections being capable of independent movement, one of said sections being connected to the carrier, means for applying fluid-pressure constantly to one section of the piston, and means for applying fluid-pressure intermittently to the opposite section of the piston.

20. In combination, a work-holder, a tool for operating upon the work, a carrier movable to present the tool at the holder or to remove it therefrom, a cylinder having opposite sections of different diameters, a piston having sections fitting Within the cylindensections, the 'piston'- sections being capableof independent movement, the section of smallerdiameter being connected to the carrier, means for applying fluid-pressure constantly to said section of smaller diameter, and means for applying fluid-pressure intermittently to the section of greater diameter.

21. In combination, a work-holder, a tool for operating upon the work, a carrier movable to present the tool at the holder or to remove it therefrom, a cylinder having opposite sections of different diameters, a piston-having sections fitting within the cylinder-sections, the piston-sections being capable of independent movement, the section of smaller diameter being connected to the carrier, means for limiting the extent of movement of the piston-section of greater diameter while leaving the piston-section of smaller diameter free for further movement, means for applying fluid-pressure constantly to said section of smaller diameter, and means for applying fiuid-pressure intermittently to the section of greater diameter.

22. In a sole-rounding machine, -a rotatable holder for a sole, a carrierarm pivoted adjacent to the holder, a cutter mounted upon the carrierarm and movable thereby into and out of operating position at the holder, -a cylinder, a piston movable in the cylinder, means for applying fluidpressure to the cylinder, and means for connecting the piston to the carrier-arm.

23. In a sole-rounding machine, a rotatable holder for a sole, a carrier-arm pivoted adjacent to the holder, a cutter mounted upon the carrierarm and movable thereby into and out of operating position at the holder, a cylinder, a piston movable in the cylinder, means for applying fluid-pressure to the cylinder, a valve for actuation by the operator to control fluid-pressure, and means for connecting the piston to the carrier-arm.

24. In a sole-rounding machine, a rotatable holder for a sole, said holder including a pattern, a carrier-arm pivoted adjacent to the holder and having a gage member for contact with the pattern, a cutter mounted upon the carrier-arm and positioned by the gage member for-operation upon the sole, fluid-pressure mechanism acting upon the carrier-arm to move the cutter into operating position and to remove it therefrom, a valve for actuation by the operator to control the fluidpressure and initiate the movement of the cutter to operating position, and means movable with the pattern for actuating the valve to reverse the movement of the cutter.

25. In a sole-rounding machine, a rotatable holder for a sole, a carrier-arm pivoted adjacent to the holder, a cutter mounted upon the carrierarm and movable thereby into and out of operating position at the holder, a cylinder having axially alined sections of different diameters, in-

dependently movable piston-sections within the cylinder-sections, means for applying fluid-pressure oppositely to the cylinder-sections, and means for connecting the piston-sectionof smaller diameter to thecarrier-arm, the piston-section of greater diameter acting upon the smaller but being limited in its extent of movement.

26. In a sole-rounding machine, a rotatable holder for a sole, said holder including a pat tern, a carrier-arm pivoted adjacent to the holder and having a gage member for contact with the pattern, a cutter'mounted upon the carrierarm and positioned by the gage member for op eratidn upon a sole, and fluid-pressure mechanism acting 'upon the'carrier-alm to move the cutter in'to operating position and to remove it therefrom to a limited extent, the carrier-arm being movable in the rotation of the pattern to a greater extent.

27-. In a rounding machine, a movable workholder including a pattern, a movable carrier cooperating with-the work-holder, a cutter mounted upon the carrier and positioned by the -pattern for operation the work, actuating means through which the holder is moved, and means controlled by the pattern for governing the actuatmg means.

'28. In-a rounding machine, a movable workh'old'er including a pattern, a movable carrier co operatin'g with the work-holder, a cutter mounted the carrier and positioned by the pattern for operation upon the work, actuating means through which the holder is moved, and means made effective upon the arrival of the cutter in =operating position as determined by the pattern for initiating the movement of the work-holder by the actuating means.

29. In a roiinding machine, a movable Workholder including a pattern, -a movable carrier co operatin'g with the work-holder, a cutter mounted upon the carrier and positioned by the pattern for operation upon the Work, actuating means through which the holder is moved, means made eiT-ect-ive upon the arrival of the cutter in operating position as determined by the pattern for initiating the movement of the work-holder by the actuating *means, and means acting in the "movement of the 'workholder for terminati-ng this movement.

30. In a sole-rounding -machine, a rotatable work-holder including a sole-pattern, a movable carrier 'co-opera-ting with the holder, a cutter mounted "upon the carrier to act upon a sole in the holder, 'a gage device movable upon the carrier by contact 'with the pattermactuating means by which the holder is rotated, and means controlled fi'n the movement of the gage device for governing the actuating means.

31. In a sole-rounding machine, a rotatable work -holder including a sole-pattern, a movable carrier co-operating with the holder, a cutter rotatable upon the carrier to act upon a sole in the holder, -a 'gage-roll rotatable upon the carrier and movable by contact with the pattern into axial armament withthe cutter, actuating means through which the holder is rotated, and means ma'de efieotive upon alinement of the gage-roll and 'eut't'er for initiating the rotation of the holder by the actuating means.

32. In a sole-rounding machine, a rotatable work-holder including a sole-pattern, a movable carrier co-operating with the holder, a cutter rotatable the carrier to act upon a sole in the holder, a gage-roll rotatable upon the carrier and movable by contact with the pattern into axial -alinem'ent with the cutter, actuating means through which the holder is rotated,-means made effective upon aliriement of the gage-roll and cutter for initiating the rotation of the holder by the actuating means, and means made efiecrive-m the movement of the holder 'for termie nating such movement.

33. In a sole-rounding machine, a rotatable work-holder including a sole-pattern, a movable carrier co-operating with the holder, a cutter mounted upon the carrier to act upon a sole in the holder, a gage device movable upon the carrier by contact with the pattern during a later portion only of the movement of the carrier, actuating means through which the holder is rotated, and means for governing the actuating means, said governing means being ineffective during the earlier portion of the holder-movement.

34. In a sole-rounding machine, a rotatable work-holder including a sole-pattern, a carrierarm pivoted adjacent to the holder, a rotatable cutter mounted upon the arm, a lever fulcrumed upon the arm, a gage device carried by the lever for contact with the pattern, a clutch through which the holder is rotated, a contact member movable upon the arm, a second contact member movable upon a relatively fixed mounting, a cam carried by the lever for urging the first contact member into engagement with the second, and means controlled by the second contact member for governing the clutch.

35. In a sole-rounding machine, a rotatable work-holder including a sole-pattern, a carrierarm pivoted adjacent to the holder, a rotatable cutter mounted upon the arm, a lever fulcrumed upon the arm, a gage device carried by the lever for contact with the pattern, a clutch through which the holder is rotated, a contact member movable upon the arm, a second contact member movable upon a relatively fixed mounting, a cam (carried by the lever for urging the first contact member into engagement with the second for causing the engagement of the clutch, and a cam movable by the work-holder for disengaging the clutch. V p

36. In a sole-rounding machine, a rotatable work-holder including a sole-pattern, a carrierarm pivoted adjacent to the holder, a rotatable cutter mounted upon the arm, a lever fulcrumed upon the arm, a, gage device carried by the lever for contact With the pattern, a clutch through which the holder is rotated, a plunger movable upon the arm, a second plunger movable upon a relatively fixed mounting, the two plungers being normally spaced from each other and having laterally extended contact-portions, means carried by the lever for urging the first plunger into engagement with the second, and means controlled by the second plunger for governing the clutch.

37. In a machine for operating upon soles, a pivoted carrier, a sole-holder rotatable upon the carrier and including a pattern, a slotted link joined to the carrier, a revoluble actuating member movable in the slot, means for rotating the holder upon the carrier and for revolving the actuating member, and a tool positioned by the pattern with respect to a sole in the holder.

38. In a machine for operating upon soles, a pivoted carrier, a sole-holder rotatable upon the carrier and including a pattern, a slotted link, a revoluble actuating member movable in the slot, a link connected to the carrier, a lever pivoted at its opposite extremities to the two links, means for rotating the holder upon the carrier and for revolving the actuating member,

and a tool positioned by the pattern with respect ing the holder upon the carrier, means for oscil lating the carrier and including a lever, means arranged to vary the relation of the fulcrum of the lever to its opposite extremities, and a tool positioned by the pattern with respect to a sole in the holder.

40. In a machine for operating upon soles, a pivoted carrier, a sole-holder rotatable upon the carrier and including a pattern, means for rotatin the holder upon the carrier, means for oscillating the carrier and including a lever, a fulcrum-block for the lever, means movable by the operator to change the position of the fulcrum-block, and a tool positioned by the pattern with respect to a sole in the holder.

41. In a machine for operating upon soles, a pivoted carrier, a sole-holder rotatable upon the carrier and including a pattern, a slotted link, a revoluble actuating member movable in the slot, a link connected to the carrier, a lever pivoted at its opposite extremities to the two links, means arranged to vary the relation of the fulcrum of the lever to its opposite extremities, means for rotating the holder upon the carrier and for revolving the actuating member, and a tool positioned by the pattern with respect to a sole in th holder.

42. In a sole-rounding machine, a pivoted carrier having spaced arms, a sole-pattern and a clamp rotatable in the respective arms, gearing by which the pattern and clamp are rotated, an element of the gearing being provided with a crankpin, a link having a slot in which the crankpin operates, a link joined to the carrier, a lever connect-ed at its opposite ends to the two links, and a rotatable cutter positioned by the pattern with respect to a sole held between said pattern and clamp.

43. In a sole-rounding machine, a frame, a carrier pivoted upon the frame and having spaced arms, a sole-pattern and a clamp rotatable in the respective arms, gearing by which the pattern and clamp are rotated, an element of the gearing being provided with a crankpin, a link having a slot in which the crankpin operates, a link joined to the carrier, a fulcrum member variable in position upon the frame, a lever having a slot in which the fulcrum member lies, said lever being connected at its opposite ends to the two links, and a rotatable cutter positioned by the pattern with respect to a sole held between the pattern and the clamp.

44. In a sole-rounding machine, a. frame, a. carrier pivotedupon the frame and having, spaced arms, a sole-pattern and a clamp rotat-- able in the respective arms, gearing by which. the pattern and clamp are rotated, an element; of the gearing being provided with a crankpin, a link having a slot in which the crankpin operates, a link joined to the carrier, a fulcrum member guided upon the frame, a member for actuation by the operator to vary the position of the fulcrum member, a lever having a slot in which the fulcrum member lies, said lever being connected at its opposite ends to the two links, and a rotatable cutter positioned by the pattern with respect to a, sole held between the pattern and the clamp.

45. In a sole-rounding machine, a frame,'a carrier pivoted upon the frame and having spaced arms, a sole-pattern and a clamp rotatable in the respective arms, gearing by which the pattern and clamp are rotated, an element of the gearing being provided with a crankpin, a link having a slot in which the crankpin operates, a link joined to the carrier, 2. fulcrum memiber guided upon the frame, a member for actuation by the operator to vary the position of the fulcrum member, a member movable by the operator to fix the fulcrum member in place, a lever having a slot in which the fulcrum member lies, said lever being connected at its opposite ends to the two links, and a rotatable cutter positioned by the pattern with respect to a sole held between the pattern and the clamp.

46. In a sole-rounding machine, a frame, a carrier pivoted upon the frame and having spaced arms, a sole-pattern and a clamp rotatable in the respective arms, gearing by which the pattern and clamp are rotated, an element of the gearing being provided with a crankpin, a link having a slot in which the crankpin operates, a link joined to the carrier, a fulcrum member guided upon the frame, a member for actuation by the operator to vary the position of the fulcrum member, indicating means set in the movement of the operator-actuated member, a lever having a slot in which the fulcrum member lies, said lever being connected at its opposite ends to the two links, and a rotatable cutter positioned by the pattern with respect to a sole held between the pattern and the clamp.

47. In a machine for operating upon soles, a movable sole-holder including a pattern, a carrier movable toward and from the holder, a tool mounted upon the carrier and movable thereby under the influence of the pattern, and a gage device variable in position in a direction substantially at right angles to the plane in which the tool is moved by the carrier and in such variation in position co-operating with the pattern to change the relation of the tool to the work.

48. In a sole-rounding machine, a sole-holder including a pattern, a carrier movable toward and from the holder, a cutter rotatable upon the carrier, a gage-roll rotatable upon the carrier about an axis substantially parallel to that of the cutter and having an inclined periphery for contact with the complementally inclined periphery of the pattern, and means arranged to vary the relation of the cutter and gage-roll longitudinally of their axes.

49. In a sole-rounding machine, a sole-holder includin a pattern, a carrier movable toward and from the holder, a cutter rotatable upon the carrier, a gage-roll rotatable upon the carrier about an axis substantially parallel to that of the cutter and having an inclined periphery for contact with the complementally inclined periphery of the pattern, and a mounting for the gage-roll variable in position longitudinally of its axis.

50. In a sole-rounding machine, a sole-holder including a pattern, a carrier movable toward and from the holder, a cutter rotatable upon the carrier, a screw mounted upon the carrier and extending substantially parallel to the axis of the cutter, a nut rotatable to position the screw longitudinally, and a gage-roll rotatable upon the screw and having an inclined periphery for contact with the complementally inclined periphery of the pattern. 7

51. In a sole-rounding machine, a. sole-holder including a pattern, a carrier movable toward and from the holder, a cutter rotatable upon the carrier, a lever fulcrumed upon the carrier, a gageroll rotatable upon the lever and movable thereby into axial registration with the cutter, said gagerol1 having an inclined periphery for contact with the complementally inclined periphery of the pattern, and means arranged to vary the position of the gage-roll longitudinally of its axis.

52. In a sole-rounding machine, a base, a tubular post rising from the base, a carrier-arm mounted to oscillate about the P st, a roundin cutter rotatable upon the arm, a driving shaft extending through the post, a casing carried at the top of the post, clutch and brake mechanism situated in the casing, gearing connecting the clutch mechanism and the cutter, and a movable soleholder with which the cutter co-operates.

ERNEST W. STACEY.

CERTIFICATE OF CORREC TI ON.

Patent No. 2,559,595. October 5, 19M.

ERNEST W. STACEY- It is hereby certified that error appears in the printed specification of the above numbered patent requiring oorrection'as follows: Page 5, first column, line 21, strike out "about the axis of the shaft 2h" and insert the same after the word "means" and before the comma in line 20, same page and column; and that the said Letters Patent should beread with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 25rd day of January, A. D. 19b5,

Leslie Frazer (Seal) Acting Commissioner of Patents. 

